Graffiti

Discover your inner Van Gogh with this deceptively simplistic-looking doodling application (available here on Facebook and here on MySpace). You start with a blank canvas, a palette of colors and a brush. Once you've created your oeuvre, you can save it to your profile, then hit the replay button to watch it get automatically redrawn on the page. You'll be amazed at the elaborate and detailed drawings people have created with such rudimentary tools. But if you want to use Graffiti just to send colorful smiley faces to pals, that's fine too.

—Anita Hamilton